my_strtok_r 함수, delimitor 사이의 공백도 리턴함

my_strtok_r.c

char *my_strtok_r(char *text, const char *delimitor, char **save_this)
{
	int nLen = 0;

	if (delimitor == NULL) {
		return NULL;
	}
	
	nLen = strlen(delimitor);
	if (nLen <= 0) {
		return NULL;
	}
	
	if(save_this == NULL)
	{
		return NULL;
	}
	if (text != NULL)
	{
		/* New text. */
		int i = 0;
		while(text[i] != '\0')
		{
			if(strncmp(text+i, delimitor, nLen) == 0)
			{
				text[i] = '\0';
				*save_this = &text[i + nLen];
				//printf("[%s:%s:%d] i=%d, return save_this=0x%p\n", __FILE__, __func__, __LINE__, i, *save_this);
				return text;
			}
			i++;
		}
	}
	else if ((save_this != NULL) && (*save_this != NULL))
	{
		/* Old text. */
		int i = 0;
		char *start = *save_this;
		while((*save_this)[i] != '\0')
		{
			//printf("[%s:%s:%d] i=%d, *save_this[%d]=[%c]\n", __FILE__, __func__, __LINE__, i, i, (*save_this)[i]);
			if(strncmp(*save_this+i, delimitor, nLen) == 0)
			{
				(*save_this)[i] = '\0';
				*save_this = &((*save_this)[i + nLen]);
				//printf("[%s:%s:%d] i=%d, return start=0x%p\n", __FILE__, __func__, __LINE__, i, start);
				return start;
			}
			i++;
		}
		*save_this = NULL;
		save_this = NULL;
		return start;
	}
	return NULL;
}